Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii

Torsten Schöneberg, Arielle Arsenault-Benoit, Christopher M. Taylor, Bryan R. Butler, Daniel T. Dalton, Vaughn M. Walton, Andrew Petran, Mary A. Rogers, Lauren M. Diepenbrock, Hannah J. Burrack, Heather Leach, Steven Van Timmeren, Philip D. Fanning, Rufus Isaacs, Brian E. Gress, Mark P. Bolda, Frank G. Zalom, Craig R. Roubos, Richard K. Evans, Ashfaq A. SialKelly A. Hamby

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Insect activity, survival, and development are affected by climatic conditions that elicit effects at multiple scales. Pruning small fruit crop canopies alters the microclimate, which in turn may influence insect pest activity. We investigated the effect of three canopy density treatments (high, medium, low) on Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) fruit infestation in blueberries and caneberries using a two-year, multi-state experiment. We quantified the effect of canopy density on canopy microclimate, fruit quality (total soluble solids, fruit firmness), and yield. To better understand heterogeneity in canopy microclimate, parameters were further separated by canopy location (exterior vs. interior) in Maryland. In both crops, meta-analyses reveal small magnitude effects of the plant canopy on microclimate, whereas analysis of variance did not separate these effects, with mean canopy differences of 0.1–0.7 °C and 0.5–1.3 % relative humidity (RH) between caneberry canopy densities and locations. In caneberry multi-state trials, 0.14 fewer D. suzukii larvae (g fruit)−1 occurred on average in the low canopy density treatment, and 0.2 fewer D. suzukii larvae (g fruit)−1 occurred in exterior raspberries in Maryland compared with the canopy interior. Artificially infested blueberry fruit indicated immature D. suzukii survival within fruit can vary across canopy densities and locations. Although lower total yield was produced in low density canopies, canopy density did not influence berry quality or marketable yield. Microhabitats provide important shelter from extreme environmental conditions; the availability of shelter and ability to locate it affects insect pest populations and distributions. Understanding how crop canopy microclimate affects D. suzukii infestation can inform efforts to develop habitat manipulation tactics and improve the efficiency of fruit production.

Original languageEnglish (US)
Article number106860
JournalAgriculture, Ecosystems and Environment
Volume294
DOIs
StatePublished - Jun 1 2020

Bibliographical note

Funding Information:
This work is supported by Organic Research and Extension Initiative (grant no. 2015?51300?24154) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance.

Funding Information:
This work is supported by Organic Research and Extension Initiative (grant no. 2015–51300‐24154 ) from the USDA National Institute of Food and Agriculture. and by the Maryland Agricultural Experiment Station (grant no. 30379 ). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of funding agencies. We would like to thank Dr. Dong Liang, University of Maryland Center for Environmental Science, for his assistance with statistical analyses. We would also like to thank collaborating growers at the California, Maryland, Minnesota, and Oregon sites for allowing us to conduct research in their fields. We would like to thank Amber Bosch, Josh Briggs, Emilie Cole, Elizabeth Espeland, Ben Johnson, Analise Sala, Katherine Spink, and Jaclyn Stone for their technical assistance.

Keywords

  • Blackberry
  • Blueberry
  • Canopy microclimate
  • Cultural management
  • Raspberry
  • Spotted-wing drosophila

Fingerprint Dive into the research topics of 'Pruning of small fruit crops can affect habitat suitability for Drosophila suzukii'. Together they form a unique fingerprint.

Cite this